Journal of Research of the National Bureau of Standards
AbstractThe interactions of t-C4H9+ ions from neopentane with some simple polar molecules have been investigated in a high pressure photoionization mass spectrometer at thermal kinetic energies. Proton transfer was found to occur from t-C4H9+ to acetone, ammonia, and the various methylamines, but not to molecules having estimated proton affinities < 195 kcal/mol (815 kJ/mol). Macroscopic thermal rate coefficients are reported for the various proton transfer reactions, all of which are on the order of 10-9 cm3/molecule � second. The reaction [equation not included] was found to occur, but not the analogous reaction with H2O. On the basis of supplementary experiments, new limits are reported for the proton affinity of acetone. These are 203 � 2 kcal/mol < proton affinity of acetone < 207 kcal/mol.
CiteJ. Res. Nat. Bur. Stand. Sec. A: Phys. Ch., Vol. 75A, No. 5, p. 487
OcrABBYY FineReader 8.0
RightsThe Journal of Research of the National Institute of Standards and Technology is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. However, please pay special attention to the